Improve the documentation of corenetwork interfaces
    corenet_tcp_sendrecv_generic_if()
    corenet_udp_sendrecv_generic_if()
    corenet_tcp_sendrecv_generic_node()
    corenet_udp_sendrecv_generic_node()
    corenet_tcp_bind_generic_node()
    corenet_udp_bind_generic_node()
    corenet_tcp_sendrecv_all_ports()
    corenet_udp_sendrecv_all_ports()
    corenet_all_recvfrom_unlabeled()
    corenet_all_recvfrom_netlabel()